Malls are popular places for Americans to go. Some people spend so much time at malls that they are called mall rats. Mall rats do not leave the shop until they drop in the hundreds of stores under one roof.
People like malls for many reasons. They feel safe because malls have police stations or private security (安全) guards. Parking is usually free, and the weather inside is always fine. The newest malls have beautiful rest area with waterfalls and large green trees.
The largest mall in the United States is the Mall of America in Minnesota. It covers 4.2 million square feet. It has 350 stores, eight night clubs, and a seven-acre (公顷) park! There are parking spaces for 12,750 cars. About 750,000 people shop every week.
The first indoor mall in the United States was built in 1965 in Edina, Minnesota. People loved doing all their shopping in one place. More malls were built all over the country. Now, malls are like town centers where people come to do many things. They shop, of course. They also eat in food houses that have food from all over the world. They see movies at theatres. Some people even get their daily exercise by doing the new sport of mall walking. Others go to malls to meet friends.
In some malls, people can see a doctor or a dentist (牙医) and even attend church. In other words, people can do just about everything in malls. Now residents (居民) can actually live in their favorite shopping center.
Malls are           .

A．large shopping centers which also act as town centres

B．large parks with shops

C．the most popular places Americans go to

D．town centers

Why have malls become so popular?

A．Because people can do everything there

B．Because people can do many other things besides shopping for all they need

C．Because people feel safe in malls with police stations around

D．Because people enjoy the fresh air and can have a good rest there

Malls have to be large places because

A．many people drive their cars to go malls

B．there have to be some restaurants, clinics and theatres

C．many people hope to do sports in the malls

D．they have to meet different needs of so many people

Those           are called mall rats.

A．who are busy stealing in the mall

B．who have visited the biggest malls

C．who are often found busy shopping in malls

D．who live under the roof of the mall